4.1.3 - Issue with ExtDirect and store.sync() from grid

Hi everyone,

i really dont have any clue what the issue might be. I have a grid with a store, that does have a model with a proxy of type "direct" and a correct working "Api" definition. I know that, cause data is fetched and displayed in the grid.

Now, when i do changes to the grid (insert,updates) and execute "grid.store.sync()", the post-request is send to the server but the "data" attribute within is just an empty object.

I checked with the store listener "beforesync", but the change records are recognized here.